Knitting elastic bands(https://www.aoyaelastic.com/product/knitting-elastic-band.html)
Application:

Knitting elastic bands can be divided into knitted button belts, knitted drawstring belts, knitted adhesive buckle belts, knitted mesh elastic belts, knitted fishline belts, etc. It is widely used in clothing, home textiles, medical and epidemic prevention, bags, shoes and hats, outdoor sports, automobile accessories, and other fields.